Best Light Curtain Safety Relay Solutions for Industrial Safety
When selecting light curtain safety relays and related sensing equipment, prioritize reliability, response speed, and compatibility with your safety system. This guide highlights five well-suited options for American buyers, spanning trusted brand Pilz, robust CGOLDENWALL units, BANNER ENGINEERING, and BORDSTRACT. The listed products target different needs: compact safety relays, high-speed detection, and durable protection enclosures. This article helps decision-makers choose based on application, environment, and required protection level.
Overview table of chosen products:
| Product | Brand | Best For | Key Reason |
|---|---|---|---|
| PNOZ s5 Safety Relay | PILZ | Compact safety circuits and E-STOP setups | Trusted safety relay with versatile I/O |
| GW32-2-14 Safety Light Curtain | CGOLDENWALL | Medium-range safety sensing | Fast response, modular beams |
| CGOLDENWALL Safety Light Curtain (40mm pitch) | CGOLDENWALL | High-security protection | IEC-compliant design, robust housing |
| IM-T-11A Safety Relay Module | BANNER ENGINEERING | Safety control for light curtains | Inductive interface, 24V DC, compact |
| BORDSTRACT Light Curtain Sensor | BORDSTRACT | Durable industrial protection | Fast response, anti-interference |
Pilz PNOZ s5 24VDC Safety Relay
The Pilz PNOZ s5 is a compact safety relay system designed for E-STOP, safety gates, and light grids. It supports multiple normally open and normally closed contacts, enabling versatile safety circuits in machine guards. Best for facilities needing reliable, modular safety control with straightforward wiring.
Who it’s best for: small to mid-sized manufacturers needing a compact, proven safety relay for standard guarding scenarios. Why selected: Pilz is a veteran in machine safety, and the PNOZ s5’s modular approach supports scalable safety architectures.
Caution: Ensure compatibility with your existing control system and confirm the exact I/O configuration matches your guard needs.
CGOLDENWALL GW32-2-14 Safety Light Curtain
This CGOLDENWALL model features 14 beams with a 20 mm pitch, protected height of 260 mm, and total height of 320 mm, offering compact yet effective safety sensing. It uses a built-in amplifier and modulated light source for fast, reliable detection with resistance to interference.
Who it’s best for: environments needing a compact, fast-responding light curtain with relatively simple installation. Why selected: High-speed response (as fast as 10 ms) supports quick machine stoppage on interruption.
Caution: Check beam count and height alignment to ensure full coverage for your specific guarding zone.
CGOLDENWALL Safety Light Curtain 40mm Pitch (40mm, 10 Beams)
This CGOLDENWALL unit uses a 40 mm beam pitch with 10 beams and a protective height of 360 mm, total height 430 mm, and includes controller and cable. It is designed to meet international standards and CE certification, making it suitable for many industrial safety applications.
Who it’s best for: larger guarding zones or applications requiring a higher protection height. Why selected: IEC61496-1/2 alignment and CE compliance add confidence for compliant installations.
Caution: Ensure the controller and cable assembly are compatible with your safety circuit topology and existing guards.
BANNER ENGINEERING IM-T-11A Safety Relay Module
The IM-T-11A is a safety interface module designed for light curtain networks, offering 1 NC and 2 NO contacts at 24V DC and up to 6 A. It suits intermediate safety circuits where simple, reliable control is required.
Who it’s best for: facilities needing a compact safety relay to interface light curtains with machine controls. Why selected: clear wiring, dependable 24V DC operation, and a compact form factor.
Caution: This module is best when your system calls for a straightforward NC/NO configuration; plan for expansion if more channels are required later.
BORDSTRACT Light Curtain Sensor System
This light curtain sensor system uses infrared scanning for accurate detection, featuring fast response and anti-interference performance. The aluminum alloy construction provides durability in demanding environments and includes mounting kits and cables for quick setup.
Who it’s best for: harsh environments where durability and fast signaling are essential. Why selected: robust housing and modern sensing technology reduce false stops while enhancing safety continuity.
Caution: Verify that the mounting kit and cables match your guard dimensions and electrical standards for your facility.
Buying Guide
What kind of guard are you protecting?
Guarded zones vary in size and complexity. Choose light curtains with adequate beam counts and a protective height that covers the entire danger area.
What is your required response speed?
Industrial safety systems demand rapid responses. Models with faster detection and reset times reduce risk and downtime.
What standards must you meet?
IEC 61496 compliance, CE marking, and compatibility with local safety regulations influence model selection. Confirm standard conformance before purchasing.
How easy is integration with existing controls?
Look for compatibility with your current PLC, safety relays, and guard interface modules. Simpler interfaces reduce wiring complexity and installation time.
Durability and environment
Aluminum shells, IP ratings, and anti-interference features improve reliability in dusty, humid, or vibration-prone environments. Consider enclosure quality and mounting options.
Maintenance and future expansion
Modular systems or relays with common field-language wiring simplify maintenance. Plan for potential future upgrades or added safety channels.
FAQ
- What is a safety relay used for in light curtain systems?
It controls machine safety by energizing or de-energizing safety circuits when a light curtain detects an obstruction.
- What does beam pitch mean in safety light curtains?
Beam pitch is the distance between individual light beams; smaller pitches provide higher detection resolution.
- Which device is best for compact guard zones?
The Pilz PNOZ s5 offers a compact solution suitable for tight installations.
- Do these products meet international safety standards?
Several models mention IEC61496 and CE, indicating standard alignment; verify exact certifications with the seller.
- How should I choose between 10-beam and 14-beam curtains?
Choose based on coverage area and required detection resolution; more beams cover larger zones with finer detection.
- Are light curtains susceptible to interference?
Modern units use modulated infrared signals to reduce false triggers, but environmental conditions should be considered.